Production I.G has been the creative home to director Kenji Kamiyama and he directed the TV anime Eden of the East, Ghost in the Shell: Stand Alone Complex, and Moribito - Guardian of the Spirit. Napping Princess is an original anime from Kamiya and it was produced by Signal.MD. a subsidiary studio of Production I.G. The film was screened at the New York Children's Film Festival and Yubari Fantastic Film Festival.

Synopsis: Days before the 2020 Tokyo Olympics, Kokone, a high school girl who spends more time sleeping than studying, has the same strange dream filled with futuristic warring machines which seem to be connected to her family in some secret way. She will soon uncover the truth after her mechanic father is arrested and she travels to Tokyo and between dreams and reality to rescue him.